Category: Photography • jf

This Crop Factor Calculator Makes Sensor Math a Breeze

You can’t avoid crop factor these days. Whether your camera sports an APS-C, Micro Four Thirds, 1-inch, or some other size sensor, there will come a time when you’ll have to calculate a “full-frame equivalent” and that’s when the mmCalc Crop Factor Calculator will come in very handy.

mmCalc is a simple online tool that uses your sensor size to instantly convert any focal length and aperture f-stop into its 35mm equivalent.

Whether you’re using a Canon APS-C camera (crop factor 1.6) a Nikon APS-C camera (crop factor 1.5), an old Nikon 1 with a 1-inch sensor (2.7x crop factor), or something completely wacky, chances are the mmCalc calculator has you covered. You can even convert down from medium and large format, although the auto-fill bit under “Education” falls apart once the sensor gets bigger than full-frame.

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New 100MP Trichromatic digital back promises unmatched color quality! — Most have compromised color to get high ISO

Great to see! Hopefully, greater color accuracy and lower base ISO will someday trickle down into other 35mm and other formats too, which have mostly compromised color accuracy to get better low light performance through higher ISOs, which consumers demand more than accurate color, largely because color accuracy isn’t even mentioned by reviewers, and rarely in the forums. Color accuracy is harder to understand.

Canon’s 6D became well known as a high ISO champ, but is also their poorest color performing full frame 35mm camera, based on its color metamerism score of only 69.

Now, the Canon 5D Mark IV has only a mediocre color metamerism score of 85, whereas 95 would be a good score, which some earlier 35mm digital cameras achieved.

Continue reading “New 100MP Trichromatic digital back promises unmatched color quality! — Most have compromised color to get high ISO”

Dennis Johnson’s ‘Picture This’ gets new ownership, but changes little — Eagle River, Alaska

It’s sad to see galleries change direction, but Dennis still has Jitters, “where coffee is art” — and where locals’ artwork is still  boldly displayed.

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From: Frontiersman

Eagle River’s Picture This gets new ownership, but changes little

Picture This gift shop in Eagle River is changing ownership, but you’d never know it. Its manager of seventeen years, Michelle Haynes, is taking full reins come this January from longtime friend and owner, Dennis Johnson, who also owns Jitters coffee shop next door. …

Dennis and partner, Jim Starry, started Picture This in a sixteen-foot wide space, when he took to framing up his wildlife photography as a sideline to teaching. Over the years, when most galleries failed to survive, his morphed and expanded into a thriving gift shop, a lot in part to Michelle’s managerial expertise. …

Dennis will keep Jitters, now run in partnership by his daughters Briana and Shanda. He likes the idea of being able to focus on just one business and, of course, to have more time to expand his already lofty fly-fishing goals. …

Dennis Johnson said the ownership transition is smooth but doesn’t come without mixed feelings. Building this “little baby into a monstrosity of sorts with the two businesses” over these past 33 years comes with gratitude to the community for their support. He’s made friends, attended weddings and funerals, and became like family to so many.

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Elizabeth Carmel: The Next Display — “I believe we’re on the cusp of another fundamental shift in how we’ll experience and display our photographs”

Two years after Elizabeth wrote this, Samsung has now launched Frame TV, which allows photographs to be displayed as still prints when the TV is not in use, in 55 and 65-inch 4K clarity.

In this article, Elizabeth mentions how impressed she is with the deep blacks that OLED TVs have. Samsung’s Frame TVs use a different type of LEDs, and currently can’t get the deep blacks yet, but OLED TVs that can display stills will likely come as the burn-in problem is solved.

See my article: Samsung’s ‘Frame TV’ Displays Large, Fine Art, Still Images – A Photography Presentation Alternative?

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The Next Display

New opportunities on the horizon for photographers

By Elizabeth Carmel | June 16, 2015

I believe we’re on the cusp of another fundamental shift in how we’ll experience and display our photographs. …

The new 4K TVs are simply stunning, and actually can look better in some instances than a printed and framed photograph. …

Of particular interest to me at CES were the 4K OLED TVs. … This display technology creates incredibly deep blacks and vibrant colors that haven’t been previously possible on consumer displays. …

Viewing high-quality photographs on a large-screen 4K OLED TV may soon rival viewing a high-quality inkjet print. External lighting isn’t an issue with TVs as it is for inkjet or LightJet prints. Furthermore, we now can add high-resolution 4K HDR video to the mix to create a full multimedia experience. …

I think there still will be a demand for the signed, limited-edition photographic print in the future. It will be interesting to see if this new display technology reduces the demand…. I think it’s certain that visual artists will be able to reach a wider audience as people recognize their TVs can also be used as art displays. …

Similar to the challenges facing the music industry, photographers will have a new concern about the ease of copying their high-resolution digital content. I don’t spend too much time worrying about duplication of my low-resolution, 900-pixel website images on the Internet, but I do have greater concern when a 4000-pixel-wide image becomes easy to duplicate and share. The same concerns arise for 4K time-lapse and video content. The question is, will we be able to realize an income from our work when it can be so easily duplicated and shared? Hopefully, future 4K distribution technology will allow for some form of DRM (digital rights management). …

Elizabeth Carmel is a professional landscape and travel photographer. She and her husband Olof Carmel own and operate two art galleries in California, the Carmel Gallery in Calistoga and the Carmel Gallery in Truckee. You can get more information about her prints, galleries, workshops and books at and For more information about her videos, go to

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(vid) A Mesmerizing Look at Hummingbirds in Flight – 100 FLAPS/SEC • Some less than the weight of a penny

A Mesmerizing Look at Hummingbirds in Flight

When it comes to aerodynamics, hummingbirds are fine‑tuned machines.

Using a high-speed, high-resolution camera, photographer Anand Varma captures what the naked eye can’t see—the breathtaking maneuvers of a hummingbird in flight. Varma teamed up with scientists studying the biology of hummingbirds to reveal the secrets behind these captivating creatures.

An Anna’s hummingbird drinks artificial nectar from a glass vessel. The bird’s forked tongue makes a sipping motion up to 15 times a second.

Letting hummingbirds loose in wind tunnels allows researchers to probe the mechanics of flight at airspeeds of up to 35 miles an hour. A fog of water vapor makes the wind movement visible.


The wings of some species flap up to a hundred times per second.
A hummingbird shakes off rain the same way a wet dog does, with an oscillation of its head and body.

The smallest hummingbird weighs in at only 1.8 grams, which is less than the weight of a penny. The largest hummingbird tips the scales at around 20 grams.

Hummingbirds are the only birds that can hover in still air for 30 seconds or more.


(vid) Eclipse 2017: Through the Eyes of NASA

Eclipse 2017: Through the Eyes of NASA

Published on Aug 24, 2017

During the eclipse, 14 states across the U.S. were in the path of totality and experienced more than two minutes of darkness in the middle of the day – with a partial eclipse viewable all across North America. The broadcast – Eclipse Across America: Through the Eyes of NASA – covered locations along the path of totality, from Oregon to South Carolina including public reactions from all ages. The eclipse’s long path over land provided a unique opportunity to study the Sun, Earth, Moon and their interaction.

This video is available for download from NASA’s Image and Video Library:

“Total Eclipse Preview Show”, Total Solar Eclipse: “Through The Eyes of NASA,” Part 1…

Total Solar Eclipse: “Through The Eyes of NASA,” Part 2…

Total Solar Eclipse: “Through The Eyes of NASA,” Part 3…

Total Solar Eclipse: “Through The Eyes of NASA,” Part 4…